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Carbonaceous material for electrode of non-aqueous solvent secondary battery, method for producing the same, and non-aqueous solvent secondary battery
Carbonaceous material for electrode of non-aqueous solvent secondary battery, method for producing the same, and non-aqueous solvent secondary battery
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机译:非水溶剂二次电池的电极用碳质材料,其制造方法以及非水溶剂二次电池
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摘要
A carbonaceous electrode having improved capacities for doping and dedoping of a cell active substance, such as lithium, and suitable for a non-aqueous solvent-type secondary battery, is constituted by a carbonaceous material having a pore volume of at least 0.55 ml/g of pores having a pore diameter of at most 5 mu m as measured by mercury injection method, a potassium content of at most 0.5 wt. % as measured by fluorescent X-ray analysis, and a specific surface area of at most 100 m2/g as measured by nitrogen adsorption BET method. The carbonaceous material is advantageous produced by carbonizing a carbon precursor of plant origin having a potassium content of at most 0.5 wt. % as measured by fluorescent X-ray analysis, in contact with a stream of an inert gas optionally containing a halogen gas at a temperature of 700 - 1500 oC. IMAGE
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